Protection Relays & Controls © 2014 Littelfuse Protection Relays & Controls Littelfuse.com/pgr-6101 PGR-6101 SERIES (GFR4001) Ground-Fault & Insulation Monitor Description The PGR-6101 combines the features of a ground-fault protection relay and insulation monitor into one unit. It protects against ground faults by monitoring insulation resistance when the motor is de-energized and by monitoring ground-fault current when the motor is energized. The PGR-6101 features two separate analog outputs for optional current and ohm meters, and two separate alarm relays. It operates on one- or three-phase solidly grounded, resistance grounded and ungrounded systems up to 6 kV. Specifications IEEE Device Numbers Ground Fault (50G/N, 51G/N), Ground detector (64), Alarm Relay (74) Input Voltage See ordering information Dimensions H 75 mm (3”); W 100 mm (3.9”); D 115 mm (4.5”) Response delay < 50 ms Contact Operating Mode Selectable fail-safe or non-fail-safe Harmonic Filtering Standard feature Test Button Standard feature Reset Button Standard feature CT-Loop Monitoring Standard feature Output Contacts Two Form C Analog Output 0-1 mA Approvals UL Listed (E183688) Warranty 5 years Mounting DIN, Surface ORDERING NUMBER CONTROL POWER PGR-6101-120 120 Vac Ordering Information Simplified Circuit Diagram FEATURES BENEFITS Adjustable GF pickup (30-200 mA) Trip setting provides a wide range of low-level protection and system coordination Adjustable insulation pickup (60-600 kΩ) Customizable insulation resistance setpoints for maximum protection Adjustable time delay (50-250 ms ) Adjustable trip delay for quick protection and system coordination Output contacts Two Form C output contacts for ground fault and insulation-resistance fault Analog outputs (0 - 1 mA) Two analog outputs indicate insulation resistance and ground-fault current CT-Loop monitoring Alarms when CT is not connected Selectable contact operating mode Selectable fail-safe or non-fail-safe operating modes allows connection to shunt or undervoltage breaker coil Features & Benefits PGC-5000 Series Ground-Fault Transformers Required zero-sequence current transformer specifically designed for low level detection. Flux conditioner is included to prevent saturation. PGA-0500 Analog % Current Meter PGA-0510 Analog Ohm Meter Optional panel-mounted meters display ground-fault current as a percentage of the set-point and insulation resistance. PGH Family High Tension Couplers Required (for systems >1,300 V) PGH Family high-tension coupler must be connected between the phase conductor and the PGR-6101. Accessories A B C D ACCESSORIES REQUIREMENT PGC-5000 Series Required PGH Family Required >1300 V PGA-0500 Optional PGA-0510 Optional For optional conformal coating please consult factory. L2 L1 A PGR-6101 SERIES GROUNDED SUPPLY CT B C (Ground-Fault & Insulation Monitor) A D Rev: 4-C-030614 Based on Manual Rev 0-B-020614 Ground-Fault Protection – Grounded/Ungrounded AC Systems
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Protection Relays & Controls
© 2014 Littelfuse Protection Relays & Controls Littelfuse.com/pgr-6101
PGR-6101 SERIES (GFR4001)Ground-Fault & Insulation Monitor
DescriptionThe PGR-6101 combines the features of a ground-fault protection relay and insulation monitor into one unit. It protects against ground faults by monitoring insulation resistance when the motor is de-energized and by monitoring ground-fault current when the motor is energized. The PGR-6101 features two separate analog outputs for optional current and ohm meters, and two separate alarm relays. It operates on one- or three-phase solidly grounded, resistance grounded and ungrounded systems up to 6 kV.
SpecificationsIEEE Device Numbers Ground Fault (50G/N, 51G/N), Ground detector (64), Alarm Relay (74)Input Voltage See ordering informationDimensions H 75 mm (3”); W 100 mm (3.9”); D 115 mm (4.5”)Response delay < 50 msContact Operating Mode Selectable fail-safe or non-fail-safeHarmonic Filtering Standard featureTest Button Standard featureReset Button Standard featureCT-Loop Monitoring Standard featureOutput Contacts Two Form CAnalog Output 0-1 mAApprovals UL Listed (E183688)Warranty 5 yearsMounting DIN, Surface
ORDERING NUMBER CONTROL POWER
PGR-6101-120 120 Vac
Ordering Information
Simplified Circuit Diagram
FEATURES BENEFITS Adjustable GF pickup (30-200 mA)
Trip setting provides a wide range of low-level protection and system coordination
Adjustable insulation pickup (60-600 kΩ )
Customizable insulation resistance setpoints for maximum protection
Adjustable time delay (50-250 ms )
Adjustable trip delay for quick protection and system coordination
Output contacts Two Form C output contacts for ground fault and insulation-resistance fault
Analog outputs (0 - 1 mA)
Two analog outputs indicate insulation resistance and ground-fault current
CT-Loop monitoring Alarms when CT is not connected
Selectable contact operating mode
Selectable fail-safe or non-fail-safe operating modes allows connection to shunt or undervoltage breaker coil
Features & Benefits
PGC-5000 Series Ground-Fault Transformers Required zero-sequence current transformer specifically designed for low level detection. Flux conditioner is included to prevent saturation.
PGA-0500 Analog % Current Meter PGA-0510 Analog Ohm Meter Optional panel-mounted meters display ground-fault current as a percentage of the set-point and insulation resistance.
PGH Family High Tension Couplers Required (for systems >1,300 V) PGH Family high-tension coupler must be connected between the phase conductor and the PGR-6101.
AccessoriesA
B
C
D
ACCESSORIES REQUIREMENT
PGC-5000 Series Required
PGH Family Required >1300 V
PGA-0500 Optional
PGA-0510 OptionalFor optional conformal coating please consult factory.
L2
L1
A
PGR-6101 SERIES
GROUNDEDSUPPLY
CT
B
C
(Ground-Fault & Insulation Monitor)
A
D
Rev: 4-C-030614Based on Manual Rev 0-B-020614
Ground-Fault Protection – Grounded/Ungrounded AC Systems
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